US3990169A - Safety block for guns having interchangeable barrels - Google Patents

Safety block for guns having interchangeable barrels Download PDF

Info

Publication number
US3990169A
US3990169A US05/605,662 US60566275A US3990169A US 3990169 A US3990169 A US 3990169A US 60566275 A US60566275 A US 60566275A US 3990169 A US3990169 A US 3990169A
Authority
US
United States
Prior art keywords
barrel
guns
barrels
shells
gun
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/605,662
Other languages
English (en)
Inventor
Fred L. Jennie
Edmond M. Lishka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEATHERBY Inc
Original Assignee
WEATHERBY Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WEATHERBY Inc filed Critical WEATHERBY Inc
Priority to US05/605,662 priority Critical patent/US3990169A/en
Priority to JP50137106A priority patent/JPS5223898A/ja
Application granted granted Critical
Publication of US3990169A publication Critical patent/US3990169A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/54—Cartridge guides, stops or positioners, e.g. for cartridge extraction
    • F41A9/58—Cartridge stops; Cartridge positioners

Definitions

  • the field of the invention is that of safety devices or accessories for guns, and particularly guns in which the barrels are interchangeable, different barrels being chambered for different sized shells.
  • the field of the invention is that of safety devices or accessories for guns, and particularly guns in which the barrels are interchangeable, different barrels being chambered for different sized shells.
  • it is illustrated as adapted to a gas operated, semi-automatic shotgun.
  • Guns of different types having interchangeable barrels are well known in the art and are conventional. Shotguns quite commonly may be constructed to have interchangeable barrels. Different barrels may be chambered for different loads, that is, different sized cartridges. It is unsafe to load a cartridge that is an oversized cartridge into a barrel not chambered for that size but chambered only for a smaller size. The prior art has not provided anything to offset or eliminate this safety hazard.
  • the exemplary form of the invention described in detail herein is adapted in a gas operated, semi-automatic shotgun.
  • the invention is adaptable in other types of guns.
  • the shells are loaded by being moved upwardly by a shell lifter into alignment with the barrel and then automatically loaded into the chamber at the end of the barrel.
  • it takes the form of a small block, piece or lug which is secured at the lower part of the chamber part of the barrel in a position to extend rearwardly sufficiently so that a shell or cartridge which is oversized cannot be moved upwardly into a position to be loaded. The end of the shell would engage the blocking piece or lug so that loading is prevented.
  • the primary object of the invention is to provide a device or accessory for a gun having the capability of preventing loading of a shell greater than a predetermined size into the barrel.
  • a further object is to provide a device as in the foregoing in the form of a blocking member positioned at the gun breech and extending therefrom in a position such that a cartridge to be loaded cannot be moved into a position aligned with the barrel for loading.
  • a further object more specifically, is to provide a blocking piece or lug fitted into a groove or slot at the lower part of the end of the barrel and below the chamber, the lug extending sufficiently so that it would be engaged by the end of an oversized shell being moved upwardly by the shell lifter of the gun.
  • FIG. 1 is a partial isometric view of the receiver of a gun and the breech part of the barrel illustrating the position of the blocking member of the invention.
  • FIG. 2 is a partial isometric view of the rear end or breech part of the barrel of the gun showing the blocking piece in position.
  • FIG. 3 is an isometric view of a preferred form of the blocking piece.
  • FIG. 4 is an elevational view of the receiver and breech part of the gun of FIG. 1 illustrating the loading mechanism and the function of the blocking piece.
  • FIGS. 1 and 4 of the drawings a part of the firearm is illustrated which may be typical of a semi-automatic gas operated shotgun as referred to in the foregoing.
  • Numeral 10 designates the receiver part of the gun, the gun having a barrel 12.
  • the receiver has a trigger guard 14 and a shell ejection port 16, through which spent shells or cartridges are ejected.
  • a slot 20 and a bolt member 22 In the side of the receiver is a slot 20 and a bolt member 22.
  • the construction of the receiver and barrel is typical of the type referred to.
  • the receiver and barrel may be held in assembled relationship by a foreend nut not shown.
  • an arcuate extension shown at 28 having cutouts 30 and 32 which cooperate with correspondingly configurated parts in the receiver when the barrel and receiver are assembled.
  • Numeral 36 designates the breech end of the barrel, with which the blocking piece or insert of the invention is associated.
  • Numeral 40 designates a preferred form of insert, blocking piece or lug.
  • Formed in the outside of the underpart of the breech end of the barrel 12 is a groove or cutout 42 having bevelled sides shaped to receive in sliding relationship the insert or blocking piece 40.
  • the blocking piece 40 has correspondingly bevelled sides as indicated at 44 in FIG. 3 and the inner end of the insert being arcuate as shown at 46 and the inner end of the groove 42 being of similar configuration.
  • the front end of the insert 40 is also bevelled as shown at 48.
  • FIG. 4 illustrates schematically how the invention achieves its purpose.
  • the loading chamber is identified by a numeral 52.
  • Numeral 54 is a groove which accommodates a shell ejector member.
  • Numeral 56 designates a groove or slot in the upper part of the loading chamber of the receiver, the rear surface 57 of which is flat and the forward surface of which has a taper as designated at 58.
  • Numeral 62 designates the shell lifter member, which is in the form of a lever, pivoted on pivot stem 64. It has a forward part 66 which lifts the shells upwardly into the loading chamber, the shells shown being designated by the numeral 68.
  • the lifter has a rear part 70 which is mounted on the pivot pin or stem 64 with an intermediate part 72 between the forward and rear parts which can cooperate with a stop pin 74.
  • the magazine of the gun typically is below the rear part of the barrel in a position for shells to be moved rearwardly into a position of the lifter 62 as illustrated in FIG. 4.
  • the shell lifter is operated automatically by the mechanism of the gun to move the shell up into the loading chamber and from the loading chamber normally the shell is automatically loaded into the barrel chamber. As may be seen in FIG.
  • the end of the insert or blocking member 40 extends to the rear a sufficient amount such that an oversized shell, as illustrated by the shell 68 in position on the lifter 62 could not be lifted up into the loading chamber because its front end would engage and be blocked by the end of the blocking member 40.
  • the blocking member prevents loading into the gun a shell larger than a predetermined size, as determined by the extent of the blocking member.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
US05/605,662 1975-08-18 1975-08-18 Safety block for guns having interchangeable barrels Expired - Lifetime US3990169A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US05/605,662 US3990169A (en) 1975-08-18 1975-08-18 Safety block for guns having interchangeable barrels
JP50137106A JPS5223898A (en) 1975-08-18 1975-11-14 Safety device used for exchangeable gun barrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/605,662 US3990169A (en) 1975-08-18 1975-08-18 Safety block for guns having interchangeable barrels

Publications (1)

Publication Number Publication Date
US3990169A true US3990169A (en) 1976-11-09

Family

ID=24424655

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/605,662 Expired - Lifetime US3990169A (en) 1975-08-18 1975-08-18 Safety block for guns having interchangeable barrels

Country Status (2)

Country Link
US (1) US3990169A (enrdf_load_stackoverflow)
JP (1) JPS5223898A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242825A (en) * 1979-02-28 1981-01-06 Sherry Miles deBoer Firearm mechanism
US4969283A (en) * 1989-10-12 1990-11-13 The United States Of America As Represented By The United States Department Of Energy Firearm equipped with live round inhibiting means and method of making same
US5361526A (en) * 1992-12-18 1994-11-08 Campbell William J Quick release child resistant safety and security device
US6032395A (en) * 1995-11-20 2000-03-07 Bentley; James K Magazine loaded pump action shotgun
US20080121096A1 (en) * 2002-03-14 2008-05-29 Jeffrey Hajjar System and method for loading and feeding a shotgun
US20110185616A1 (en) * 2009-12-11 2011-08-04 German Sport Guns Gmbh Hand gun
US9541343B2 (en) 2015-01-21 2017-01-10 James A. Dodson Interchangeable chamber and barrel system
US10330416B2 (en) 2015-01-21 2019-06-25 Wolf Precision, Inc. Interchangeable chamber and barrel system
US11598596B2 (en) * 2020-01-28 2023-03-07 O.F. Mossberg & Sons, Inc. Firearm for use with ordnance of varying lengths

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476232A (en) * 1947-11-06 1949-07-12 Olin Ind Inc Inertia operated bolt lock

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476232A (en) * 1947-11-06 1949-07-12 Olin Ind Inc Inertia operated bolt lock

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242825A (en) * 1979-02-28 1981-01-06 Sherry Miles deBoer Firearm mechanism
US4969283A (en) * 1989-10-12 1990-11-13 The United States Of America As Represented By The United States Department Of Energy Firearm equipped with live round inhibiting means and method of making same
US5361526A (en) * 1992-12-18 1994-11-08 Campbell William J Quick release child resistant safety and security device
US6032395A (en) * 1995-11-20 2000-03-07 Bentley; James K Magazine loaded pump action shotgun
US20080121096A1 (en) * 2002-03-14 2008-05-29 Jeffrey Hajjar System and method for loading and feeding a shotgun
US20110185616A1 (en) * 2009-12-11 2011-08-04 German Sport Guns Gmbh Hand gun
US8381425B2 (en) * 2009-12-11 2013-02-26 German Sport Guns Gmbh Hand gun
US8689476B2 (en) 2009-12-11 2014-04-08 German Sport Guns Gmbh Hand gun
US9541343B2 (en) 2015-01-21 2017-01-10 James A. Dodson Interchangeable chamber and barrel system
US10330416B2 (en) 2015-01-21 2019-06-25 Wolf Precision, Inc. Interchangeable chamber and barrel system
US11598596B2 (en) * 2020-01-28 2023-03-07 O.F. Mossberg & Sons, Inc. Firearm for use with ordnance of varying lengths
US12203718B2 (en) 2020-01-28 2025-01-21 O.F. Mossberg & Sons, Inc. Firearm for use with ordnance of varying lengths

Also Published As

Publication number Publication date
JPS5223898A (en) 1977-02-23
JPS5422720B2 (enrdf_load_stackoverflow) 1979-08-08

Similar Documents

Publication Publication Date Title
US12152854B2 (en) Semiautomatic firearm
US4433610A (en) Open bolt firing mechanism for automatic firearm
US4176584A (en) Slide locking mechanism for magazine-fed firearms
US6212814B1 (en) Receiver for firearm
US3988964A (en) Gas operated firearm with metering adjustment
US7568302B1 (en) Handgun and locking means for a handgun
WO2016178863A1 (en) Firearm with safe axis firing pin and center aligned barrel
US20230266089A1 (en) Firearm accessories and attachment systems
US4409882A (en) Hand gun
US6622411B2 (en) Firearm having chamber status indicator and firearm retrofitting method
US3990169A (en) Safety block for guns having interchangeable barrels
US3996685A (en) Shell cut-off latch
US20060185212A1 (en) Firearm extractor mechanism
US11674764B2 (en) Non-semiautomatic receiver compatible with AR15/10 line of components, parts and accessories
US11326845B2 (en) Firearm having reciprocable breech cover
US6952895B1 (en) Magazine disconnect safety
US4897949A (en) Firearms
US3098311A (en) Bolt stop for semiautomatic firearm
US3142921A (en) Cartridge lifter mechanism for semi-automatic gun
US20050115128A1 (en) Single loading enhancement device for firearm
US3087387A (en) Shell catcher for firearms
US12305942B1 (en) Magazine disconnect safety
US6760991B1 (en) Single shot falling block action rifle
US3039366A (en) Target pistol with breech bolt locking mechanism
EP1106955B1 (en) Firearm having inertia striker mechanism